<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		选择地区：<select name="" id="">
			<optgroup label="北京">
				<option value="">大兴</option>
				<option value="">马泉营</option>
				<option value="">昌平</option>
				<option value="">海淀</option>
			</optgroup>
			
			<optgroup label="安徽">
				<option value="">安庆</option>
				<option value="">马鞍山</option>
				<option value="">芜湖</option>
			</optgroup>
			
		</select>
		<progress max="100" value="30"></progress>
		
	</body>
</html>
